And many nations shall join themselves to the Lord in that day and shall be My people. And I will dwell in the midst of you, and you shall know (recognize and understand) that the Lord of hosts has sent me [His messenger] to you.

The hands of Zerubbabel have laid the foundations of this house; his hands shall also finish it. Then you shall know (recognize and understand) that the Lord of hosts has sent me [His messenger] to you.